unreactive

Definitions of unreactive
  1. adjective
    (chemistry) not reacting chemically
    Synonyms:
    inactive
    (chemistry) not participating in a chemical reaction; chemically inert
    indifferent, inert, neutral
    having only a limited ability to react chemically; chemically inactive
    noble
    inert especially toward oxygen
    stable
    not taking part readily in chemical change
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    Antonyms:
    reactive
    participating readily in reactions
    activated, excited
    (of e.g. a molecule) made reactive or more reactive
    labile
    (chemistry, physics, biology) readily undergoing change or breakdown
    oxidizable
    capable of undergoing a chemical reaction with oxygen
    thermolabile
    (chemistry, physics, biology) readily changed or destroyed by heat
    unstable
    highly or violently reactive
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  2. adjective
    not tending to react to stimulation
    Synonyms:
    insensitive
    not responsive to physical stimuli
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